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Earthquakes NCES 6.E.2.2 Kim Lachler updated 10/2014 Earthquake Ground shaking Earthquakes.mov Faulting Fault_Lines_and_Earthquakes.mov a break in a body of rock along which one block slides relative to another Fault blocks – blocks on each side of the fault Hanging wall Foot wall - like a ramp - hang from it without touching it Faulting Normal Fault – rocks are pulled apart by tension What is this called for tectonic plate boundaries? Divergent Faulting Reverse Fault – rocks are pushed together by compression What is this called for tectonic plate boundaries? Convergent Faulting Strike- Slip fault (shear) – rocks are moved horizontally by opposing forces What is this called for tectonic plate boundaries? Transform What creates an earthquake Plastic deformation – cause rock to bend Elastic deformation – causes rock to stretch Elastic rebound – causes the rock to snap back Earthquake! Building of Mountains Folded Mountains – when rock layers are squeezed together and pushed upward The Himalayas Building of Mountains Fault-Block Mountains – When tension causes rock to break along a series of normal faults, resulting in different heights Hanging Hills Connecticut Building of Mountains Volcanic Mountains – along convergent boundaries Baker Mountain, Washington Bibliography Holt, Rinehart & Winston, North Carolina, Holt, Rinehart & Winston, Orlando, Fl, 2005 USGA, tension stress, http://earthquake.usgs.gov/learn/glossary/?term=tensional stress, accessed 10/04/10 Fold Mountains, http://en.wikipedia.org/wiki/Fold_mountain, accessed 10/04/10 Fold, http://en.wikipedia.org/wiki/Fold_(geology)#Fold_terminology_in_two_dimensions, accessed 10/04/10 Fault, http://en.wikipedia.org/wiki/Fault_(geology), accessed 10/04/10 Mountain formation, http://en.wikipedia.org/wiki/Mountain_formation#Fold_mountains, acessed 10/04/10 Fault-Block mountains, http://en.wikipedia.org/wiki/Fault-block_mountain, accessed 10/04/10 Ask images, http://www.ask.com/pictures?qsrc=167&o=13755&l=dis&q=Earthquake%20Faults, accessed 10/04/10 Tylersciencewebsite, http://tylersciencewebsite.weebly.com/earthquakes.html, accessed 10/19/14 In. Gov,http://www.in.gov/dhs/2792.htm, accessed 10/19/14